package com.example.lottery.dao.mapper;

import com.example.lottery.dao.datobject.PrizeDO;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface PrizeMapper {


    @Insert("insert into prize (name,image_url,price,description)"+
            " values (#{name},#{imageUrl},#{price},#{description})")
    @Options(useGeneratedKeys = true,keyProperty = "id",keyColumn = "id")
    //因为要使用奖品的id
    int insert(PrizeDO prizeDo);

    @Select("select count(*) from prize")
    int count();

    @Select("select * from prize order by id desc limit #{offset},#{pageSize}")
    List<PrizeDO> selectPrizeList(@Param("offset") Integer offset, @Param("pageSize")Integer pageSize);

    @Select("<script>" +
            " select id from prize" +
            " where id in" +
            " <foreach item='item' collection='items' open='(' separator=',' close=')'>" +
            " #{item}" +
            " </foreach>" +
            " </script>")
    List<Long> selectExistByIds(@Param("items") List<Long> prizeIds);


    @Select("<script>" +
            " select * from prize" +
            " where id in" +
            " <foreach item='item' collection='items' open='(' separator=',' close=')'>" +
            " #{item}" +
            " </foreach>" +
            " </script>")
    List<PrizeDO> batchSelectByIds(@Param("items") List<Long> prizeIds);

    @Select("select * from prize where id=#{id}")
    PrizeDO selectById(@Param("id") Long prizeId);
}
